238 lines
8.2 KiB
C++
238 lines
8.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SAX_SOURCE_TOOLS_FASTSERIALIZER_HXX
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#define INCLUDED_SAX_SOURCE_TOOLS_FASTSERIALIZER_HXX
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#include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
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#include <com/sun/star/io/XOutputStream.hpp>
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#include <sax/fastattribs.hxx>
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#include <sax/fshelper.hxx>
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#include <CachedOutputStream.hxx>
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#include <stack>
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#include <map>
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#include <boost/shared_ptr.hpp>
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namespace sax_fastparser {
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struct TokenValue
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{
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sal_Int32 nToken;
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const char *pValue;
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TokenValue(sal_Int32 _nToken, const char *_pValue) : nToken(_nToken), pValue(_pValue) {}
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};
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typedef std::vector<TokenValue> TokenValueList;
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/// Receives notification of sax document events to write into an XOutputStream.
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class FastSaxSerializer
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{
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typedef ::com::sun::star::uno::Sequence< ::sal_Int8 > Int8Sequence;
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typedef ::com::sun::star::uno::Sequence< ::sal_Int32 > Int32Sequence;
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public:
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FastSaxSerializer( const css::uno::Reference< css::io::XOutputStream >& xOutputStream );
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~FastSaxSerializer();
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::com::sun::star::uno::Reference< ::com::sun::star::io::XOutputStream > getOutputStream();
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/// called by FSHelper to put data in for writeTokenValueList
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TokenValueList& getTokenValueList() { return maTokenValues; }
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/** called by the parser when parsing of an XML stream is started.
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*/
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void startDocument();
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/** called by the parser after the last XML element of a stream is processed.
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*/
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void endDocument();
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/** receives notification of the beginning of an element.
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@param Element
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contains the integer token from the <type>XFastTokenHandler</type>
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registered at the <type>XFastParser</type>.<br>
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If the element has a namespace that was registered with the
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<type>XFastParser</type>, <param>Element</param> contains the integer
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token of the elements local name from the <type>XFastTokenHandler</type>
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and the integer token of the namespace combined with an arithmetic
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<b>or</b> operation.
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@param pAttrList
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Contains a <type>FastAttributeList</type> to access the attributes
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from the element.
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*/
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void startFastElement( ::sal_Int32 Element, FastAttributeList* pAttrList = NULL );
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/** receives notification of the end of an known element.
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@see startFastElement
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*/
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void endFastElement( ::sal_Int32 Element );
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/** receives notification of the beginning of a single element.
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@param Element
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contains the integer token from the <type>XFastTokenHandler</type>
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registered at the <type>XFastParser</type>.<br>
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If the element has a namespace that was registered with the
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<type>XFastParser</type>, <param>Element</param> contains the integer
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token of the elements local name from the <type>XFastTokenHandler</type>
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and the integer token of the namespace combined with an arithmetic
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<b>or</b> operation.
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@param pAttrList
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Contains a <type>FastAttributeList</type> to access the attributes
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from the element.
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*/
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void singleFastElement( ::sal_Int32 Element, FastAttributeList* pAttrList = NULL );
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// C++ helpers
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void writeId( ::sal_Int32 Element );
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OString getId( ::sal_Int32 Element );
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void write( double value );
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void write( const OUString& s, bool bEscape = false );
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void write( const OString& s, bool bEscape = false );
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void write( const char* pStr, sal_Int32 nLen, bool bEscape = false );
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public:
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/** From now on, don't write directly to the stream, but to top of a stack.
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This is to be able to change the order of the data being written.
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If you need to write eg.
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p, r, rPr, [something], /rPr, t, [text], /t, /r, /p,
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but get it in order
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p, r, t, [text], /t, rPr, [something], /rPr, /r, /p,
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simply do
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p, r, mark(), t, [text], /t, mark(), rPr, [something], /rPr,
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mergeTopMarks( MERGE_MARKS_PREPEND ), mergeTopMarks( MERGE_MARKS_APPEND ), /r, /p
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and you are done.
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*/
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void mark( const Int32Sequence& aOrder = Int32Sequence() );
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/** Merge 2 topmost marks.
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The possibilities: prepend the top before the second top-most
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mark, append it, append it later or ignore; prepending brings the possibility
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to switch parts of the output, appending later allows to write some
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output in advance.
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Writes the result to the output stream if the mark stack becomes empty
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by the operation.
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When the MERGE_MARKS_POSTPONE is specified, the merge happens just
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before the next merge.
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@see mark()
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*/
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void mergeTopMarks( sax_fastparser::MergeMarksEnum eMergeType = sax_fastparser::MERGE_MARKS_APPEND );
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private:
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/** Helper class to cache data and write in chunks to XOutputStream or ForMerge::append.
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* Its flush method needs to be called before touching maMarkStack
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* to ensure correct order of ForSort methods.
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*/
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CachedOutputStream maCachedOutputStream;
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::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XFastTokenHandler > mxFastTokenHandler;
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class ForMerge : public ForMergeBase
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{
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Int8Sequence maData;
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Int8Sequence maPostponed;
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public:
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ForMerge() : maData(), maPostponed() {}
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virtual ~ForMerge() {}
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virtual void setCurrentElement( ::sal_Int32 /*nToken*/ ) {}
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virtual Int8Sequence& getData();
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#if OSL_DEBUG_LEVEL > 0
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virtual void print();
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#endif
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virtual void prepend( const Int8Sequence &rWhat );
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virtual void append( const Int8Sequence &rWhat ) SAL_OVERRIDE;
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void postpone( const Int8Sequence &rWhat );
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protected:
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void resetData( );
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static void merge( Int8Sequence &rTop, const Int8Sequence &rMerge, bool bAppend );
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};
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class ForSort : public ForMerge
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{
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std::map< ::sal_Int32, Int8Sequence > maData;
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sal_Int32 mnCurrentElement;
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Int32Sequence maOrder;
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public:
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ForSort( const Int32Sequence& aOrder ) :
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ForMerge(),
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maData(),
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mnCurrentElement( 0 ),
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maOrder( aOrder ) {}
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void setCurrentElement( ::sal_Int32 nToken ) SAL_OVERRIDE;
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virtual Int8Sequence& getData() SAL_OVERRIDE;
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#if OSL_DEBUG_LEVEL > 0
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virtual void print() SAL_OVERRIDE;
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#endif
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virtual void prepend( const Int8Sequence &rWhat ) SAL_OVERRIDE;
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virtual void append( const Int8Sequence &rWhat ) SAL_OVERRIDE;
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private:
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void sort();
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};
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::std::stack< boost::shared_ptr< ForMerge > > maMarkStack;
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bool mbMarkStackEmpty;
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// Would be better to use OStringBuffer instead of these two
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// but then we couldn't get the rtl_String* member :-(
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rtl_String *mpDoubleStr;
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sal_Int32 mnDoubleStrCapacity;
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TokenValueList maTokenValues;
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#ifdef DBG_UTIL
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::std::stack<sal_Int32> m_DebugStartedElements;
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#endif
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void writeTokenValueList();
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void writeFastAttributeList(FastAttributeList& rAttrList);
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/** Forward the call to the output stream, or write to the stack.
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The latter in the case that we are inside a mark().
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*/
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void writeBytes( const ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData );
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void writeBytes( const char* pStr, size_t nLen );
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};
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} // namespace sax_fastparser
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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